Date Published: September 01, 2012
Publisher: International Union of Crystallography
Author(s): Tian-li Ren, Cheng-jian Yang, De-yu Fang, Guo-xun Shi, Xue Zhu.
The asymmetric unit of the title ion-pair complex, (C9H12NO2)2[Ni(C4N2S2)2], contains two 1-(ethoxycarbonylmethyl)pyridinium cations and one bis(1,2-dicyanoethene-1,2-dithiolato)nickelate(II) dianion, which exhibits a slightly distorted square-planar coordination geometry. In the crystal, the cations are linked by strong C—H⋯O hydrogen bonds into C(6) chains along . The cations and anions are linked into a three-dimensional architecture by weak C—H⋯N and C—H⋯S interactions.
For details of other maleonitriledithiolate metal complexes, see: Robertson & Cronin (2002 ▶); Coomber et al. (1996 ▶); Duan et al. (2010 ▶); Wang et al. (2012 ▶). For general background to the use of maleonitriledithiolate transition metal complexes as building blocks for optical, magnetic and conducting molecular materials, see: Brammer (2004 ▶); Ni et al. (2005 ▶); Robin & Fromm (2006 ▶). For graph-set notation, see: Bernstein et al. (1995 ▶).